--- a/dav/version.h	Sun Jan 07 12:59:21 2018 +0100
+++ b/dav/version.h	Thu Feb 01 16:31:24 2018 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2016 Olaf Wintermann. All rights reserved.
+ * Copyright 2018 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -26,10 +26,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef VERSION_H
-#define VERSION_H
-
+#ifndef DAV_VERSION
 #define DAV_VERSION "1.1 dev"
+#endif
 
-#endif /* VERSION_H */
-